Leonhardt sounder



(No Model.)

L. KORNDER.

I NAIL DRIVING APPARATUS. v No; 535,503. Patented Mar. 12, 1895.

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UNITED STATES PATENT Omen.

LEONHARDT' KORNDER, OF UFFENHEIM, GERMANY.

NAlLn-DRIVING APPARATU3:.

SPECIFICATION forming part of Letters Patent No. 535,503,-dated March12, 1895.

a 1 Application filed May 6, 1893. SeriulNo. 173,310. (No model.)Patented in Switzerland February 21, 1 in gland April 10,1893, No. 7,335in France April 21, 1893, Nos. 227,426 and 214,186; in Belgium May31,1893, Nos- 104,669 and 79,497; in Canada August 12, 1893, Nos. 43,913and 63,220; in Austria-Hungary August 27,1893, No. 23,035 andNo. 38,321,and in Italy October 9, 1893, Nos. 34,428/272 and 12,225.

To all whom, it may concern:

Be it known that I, LEONHARDT KORNDER, boot and shoe manufacturer, of 6Ansbacherstrasse, Uffenheim, Bavaria, in the Empire of Germany, haveinvented a new and useful Improved Nail-Driving Apparatus, (for whichpatents have been obtained in France, Nos. 227,426 and 214,136, datedApril 21, 1893; in England, No. 7,335, dated April 10, 1893; in Canada,Nos. 43,913 and 63,220, dated August 12, 1893; in Belgium, Nos.104,669and 79,497, dated May 31, 1893; in Italy, Nos. 34,428/272 and 12,225,dated October 9,1893; in Austria- Hungary, No. 23,035 and No.38,321,dated August 27, 1393, and in Switzerland, No. 6,469, datedFebruary 21, 1893,) of which the following is a specifiation, referencebeing had therein to the accompanying drawings.

The present invention has for its object to provide an improvednail-driving apparatus, which is intended to drive nails, of varioussizes, home, and is'adapted to be used especially in places di'fficultof access. In addition to the apparatus being constructed in such manneras to allow of its being used in places difticult of access, it can beelongated by means of additional screwed parts so that it can be usedalso at more or less great distances.

In the accompanying drawings Figure 1 is a side view of my improvednail-driving apparatus showing the parts in the position they wouldassume preparatory to the driving of a nail. Fig. 2 is a similar viewbut showing the parts in the position they would assume when a nail hasbeen driven home. Fig. 3 is a side view of the driving mandrel; and Fig.4 is a cross section of the nail driver taken on the linear-m Fig. 1.

The nail-driving apparatus consists of a cylindrical tube d, which, atthe end 07/, is strengthened on the outside and made conical andprovided with springgripping tongues a e h hereinafter described. Theother end of the tube at is provided with a loosely fitting mandrel, ordriving plunger fhaving a strong rounded head f, while the other end, inf Fig. 3, is provided with a recess for the reception of the head of thenail'to be driven. In Fig. 4 it will be seen that the conical part d ofthe tube (2 has open slots in opposite sides thereof. These two slotsare intended to give passage to the parts not a pair of spring grippers.The fulcra h for the gripper arms a are fixed in the conical part d ofthe tube 11.

In order to drive a nail the latter is first inserted into the mouth ofthe grippers, after having previouslypressed the springs eof the arms atogether so as to open the said mouth of the grippers. The nail to beinserted is introduced head first into the said month, while the pointis allowed to stand out beyond ihesame. Then, by releasing the arms a,the nail is gripped tightly by the grippers through the action of thesprings e. The next operation is to insert the plungerfinto the tube d.The nail held in the apparatus is then put in its desired position,after which the plunger f is driven farther into the tube d by means ofa hammer, thereby causing the nail to be driven home. As the plungerpasses farther into the tube, it passes between the two parts of themouth of the grippers, which thereby open, but as the nail is nowalready partly driven into the material,it requires no longer to beheld. By the addition of the extra lengths of tube 61 and drivingmandrel f screwed together, the nail driver maybe made of any desiredlength.

What I claim, and desire to secure by Lettors Patent of the UnitedStates, is-

A nail driving implement, comprising an essentially cylindrical tubeprovided with two opposing longitudinal slots at one of its ends,spring-controlled grippers pivoted eX- teriorly on the tube and eachnormally projecting into one of the slots of the said tube and beingessentially flush with the slotted end thereof to allow of the implementbeing used in places difficult of access, the other end of each gripperbeing located exteriorly of the tube to permit of manual operation, anda plunger adapted to slide in the said tube, substantially as described.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

LEONHARDT KOR N DER.

Witnesses:

FRITZ ScHo'RK, CONSTANTIN SIMON.

